Part 2: Lab Investigation (1 hour including teacher's feedback) Use video analysis techniques to determine the relationship between the magnitude of the electrical force and the distance between two charged objects. 1. Ensure that you have on your laptop/desktop the Logger Pro and the QuickTime movie "Coulomb.mov". If you cannot find the video, download it from Canvas/Modules/Experiment 2/Coulomb.mp4 2. Watch the video clip "Video Analysis with Logger Pro". You can find the link in Canvas/Modules/logger Pro, or you can use https://www.youtube.com/watch?v=shNPrswj_kA 3. Now that you know how to use the video tool of Logger Pro, do start Logger Pro. Choose Movie from the Insert menu and navigate to the movie clip Coulomb.mov on your computer. Play the clip a couple of times. Note the interaction that occurs between the spheres. 4. Enable Video Analysis by clicking on the button in the lower-right corner. This brings up a toolbar with several buttons (see the figure below). Make the movie window large enough to readily make measurements.

LivePhoto Physics Series Electrostatic Force 2.00 m from ceiling Ball Mass 2.93 g 2 Frames/second Copyright 2007, RIT 1.00 m